A study of essential components of three types of Bituminous Materials in Mishraq sulfur Mine

Motea Al jbouri, Hala Jasim, thaer abed halo
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Abstract

The chemical constituentisof three types of bituminous materials found in different conditions in Mishraq sulfur Minewas studied. The FTIR spectroscopy showed reduce in the length of hydrocarbon chains from the intensity of paraffinic bands in bitumenous materials of Frasch sulfur Mine (BM) compare with natural bituminous materials (NB) and Bituminous materials which extracted in-depth about 200 m without exposing to Frasch process condition (BB). The percentage of asphaltene in (MB) which increases dramatically is found 63.64% compared with (BB) and (NB) which 37.37% and 14.28% respectively and a similar decrease in percentage petrolene (maltene) . A percentage of n-hexane fraction by silica gel chromatography of petrolene (MB) is 18.49% compared with (BB and N.B) are 25.06 % and 47.05 % respectively while the cyclohexane fractions of petrolene MB are four-time of N.B and three-time of B.B . From all results, we conclude that a reaction has occurred between sulfur and bitumenous materials especially hydrocarbon chains of Aromatics and naphthenic rings in sulfur well during Frasch process which leads to an increase in asphaltene percentage and decrease of petrolene.
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Mishraq硫磺矿三种沥青原料的基本成分研究
对米什拉克硫磺矿在不同条件下发现的三种沥青材料的化学成分进行了研究。FTIR光谱分析表明,与天然沥青材料(NB)和未暴露于Frasch工艺条件下提取深度约200 m的沥青材料(BB)相比,Frasch硫矿(BM)沥青材料的烷烃链长度减少。沥青质在(MB)中的含量显著增加,为63.64%,而(BB)和(NB)的沥青质含量分别为37.37%和14.28%,汽油(maltene)的沥青质含量也有类似下降。经硅胶层析得到的石油天然气(MB)正己烷馏分为18.49%,而(BB和N.B)的正己烷馏分分别为25.06%和47.05%,而石油天然气(MB)的环己烷馏分是N.B的4倍和B.B的3倍。综上所述,硫井中硫与沥青物质特别是芳烃链和环烷环发生了反应,导致沥青质含量增加,汽油含量降低。
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